Co2?? Versus fresh air intake?

ta5rtdrp16in

ta5rtdrp16in

Active Member
My grow room in 90% finished. but still on debate of a vented fan. if i vent from the room it will be out into my basement. but it wouldnt be directly outside. would or could i use a slow relase co2 setup instead? Because isnt it the co2 in the fresh air im looking for?
 
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wiseguy316

Well-Known Member
the amount of plants will have to answer your question, there is plenty of CO2 in the air to keep plants healthy, how many plants will determine if you to needs supplemental co2
 
ta5rtdrp16in

ta5rtdrp16in

Active Member
im set up for 4 plants. But like you ssaid i need a flow of "fresh" air flowing over my plants. i absolutly agree, but is there more then co2 that i need from the fresh air?
 
djlifeline

djlifeline

Well-Known Member
ta5rtdrp16in said:
im set up for 4 plants. But like you ssaid i need a flow of "fresh" air flowing over my plants. i absolutly agree, but is there more then co2 that i need from the fresh air?
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Na not really. Just get a nice air flow across your plants and if want to add Co2 eithier by a co2 tank and setup if you have the money or if your like me and on a budget just use the yeast and sugar method in a 2litre bottle. It will always help with a bit more co2 and it very cheap so you know worth it no matter how effective it is.
 
ta5rtdrp16in

ta5rtdrp16in

Active Member
ya i had the yeast thing going on on my last glow, for a co2 setup, couldnt i just rock a couple 16 or 20 oz tanks for a valve o them set up for slow realase? one at a time of course, but ive got tanks from my paintball days. give me 5 minutes and ill throw up soime pics of the room.
 
ta5rtdrp16in

ta5rtdrp16in

Active Member
hydroponic, the little nipple in the middle is just a quick disco for the water pump which is set up to the four pots. there filled with a velucimite perlite 50/50 mix and peastone gravel at the bottom, 400 watt hps/mh comes in tuesday. and ill permanantly set up wires and shit around those. but where getting there.
 

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djlifeline

djlifeline

Well-Known Member
ta5rtdrp16in said:
ya i had the yeast thing going on on my last glow, for a co2 setup, couldnt i just rock a couple 16 or 20 oz tanks for a valve o them set up for slow realase? one at a time of course, but ive got tanks from my paintball days. give me 5 minutes and ill throw up soime pics of the room.
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I don't see why it wouldn't work. Aslong as it on a very slow release or if I was you just a short burst then off maybe once a day? Up to you. I do not know much about hooking up co2 tanks and cannisters need to talk to an expert :)
 
ta5rtdrp16in

ta5rtdrp16in

Active Member
ya ill have to snoop around on here a little longer see if i can come up with a thread pointed at what im really looking for.
 
fatman7574

fatman7574

New Member
Plants do not need fresh air. They don't give a jack whether their air is fresh or not. When it comes to their air they are only interested adequate CO2 lconcentrations and the humidity level. Most importantly they need CO2 levels proporational to the room temperature, the lighting intensity and the water and nutrients supplied. Using CO2 is not as cheap as just supplying continous low levels of CO2 though. With CO2 you need at a minimum a bottle of CO2, a pressure reducing regulater, a flow meter a timer and a solenoid valve. CO2 allows you to utilize they heat supplied by your lighting buy supply the extra CO2 need at high temps. However CO2 also increases humidity as it increases transpiration. This usually means to take full advantage of CO2 a dehumifier is usually needed. IMHO the use of yeast to produce CO2 is just a spotty hit and miss system that usually produces neglible increases in yield or cycle time benefits.
 
igothydrotoneverywhere

igothydrotoneverywhere

Well-Known Member
fatman7574 said:
Plants do not need fresh air. They don't give a jack whether their air is fresh or not. When it comes to their air they are only interested adequate CO2 lconcentrations and the humidity level. Most importantly they need CO2 levels proporational to the room temperature, the lighting intensity and the water and nutrients supplied. Using CO2 is not as cheap as just supplying continous low levels of CO2 though. With CO2 you need at a minimum a bottle of CO2, a pressure reducing regulater, a flow meter a timer and a solenoid valve. CO2 allows you to utilize they heat supplied by your lighting buy supply the extra CO2 need at high temps. However CO2 also increases humidity as it increases transpiration. This usually means to take full advantage of CO2 a dehumifier is usually needed. IMHO the use of yeast to produce CO2 is just a spotty hit and miss system that usually produces neglible increases in yield or cycle time benefits.
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you can use your air conditioner as a dehumidifier, thats how they actually work. just set your ac unit right at the heat level in the room.
 
Dank Raptor

Dank Raptor

Active Member
its one or the other. You dont want fresh air coming in if you are enriching the room with c02. Air coming in means your c02 is leaving. That is a no brainer. how much cash you got? depends on that.
 
LadyJane420

LadyJane420

Member
Fatman -

Is this your first grow? If so, in all honesty, buy a fan, skip CO2 until you have everything else dialed in. Yes, CO2 injection is better than just air but, the benefit is not really gained unless everything else is in order. IMHO, co2 is the last thing you add to a new setup.
 
a mongo frog

a mongo frog

Well-Known Member
LadyJane420 said:
Fatman -

Is this your first grow? If so, in all honesty, buy a fan, skip CO2 until you have everything else dialed in. Yes, CO2 injection is better than just air but, the benefit is not really gained unless everything else is in order. IMHO, co2 is the last thing you add to a new setup.
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Can u explain like what else needs to be in order? Other than your temps and rh right.
 
Dank Raptor

Dank Raptor

Active Member
everything should be in order mainly the plants diet and environment meaning temps, rh, c02, oxygen to the roots, day/night temp difference, wind, ability to exchange nutrients and all nutrients in your medium have a balance. when everything is in balance your plants are dialed in and will benefit from the c02. Also, the demand for nutrients is higher which is good but because of the faster metabolism rate problems develop faster. Also, if everything is not dialed in they will not benefit from the c02.
 
outlander1

outlander1

Member
I can't get over the number of people with THOUSANDS of posts, that give the most incorrect, stupid advice I have seen.

Glad to see a few people know what they are talking about. :dunce:
 
Clown Baby

Clown Baby

Well-Known Member
Don't waste your time on homemade CO2 solutions. Fermentation of yeast and sugarwater will be messy and won't create a worthwhile amount of CO2. If you don't want to invest in a proper CO2 tank or gas burner set up, then your best bet is to go with ventilation and just exchange the air.

Sealed rooms can create additional climate control issues. humidity, temps, etc.

IMO if you're not going over 200+ sq ft of grow space then just running ventilation will make your life easier.

just my .02
 
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snailwagon

Active Member
There are two trains of thought - one is plants need fresh air, the other is that proper temp, humidity, and CO2 levels is fresh air to a plant. You can get better performance with adding CO2 to the 1200-1500ppm range, with ambient usually around 450ppm. But - you have to be able to operate a relatively sealed system while keeping your Humidity and temp acceptable. If you are new to indoor gardening you will be just complicating things with CO2; learn to use and exhaust fan to keep you temp and humidity correct first.

For a tent or closet grow, you can use the CO2 fungal bags to up your gas a bit. SWIM tried 5 of the Exhale bags in a tent with constant air exchange and was able to maintain 800ppm CO2. CO2 will also not be of much benefit if you have insufficient light and plant food. More CO2 = need for more light = need for more food, for everything to work right.
 
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